Introduction: We decided to study the prevalence of zygomatic fracture among the population which presented one variation of facial fractures has been occurred more often from traffic accidents, sports trauma and other injures with high-impact. There were the quantity of patients with zygomatic fractures has been treated at in-patients and out-patients.In 1998,Gerhard S., Joseph A. (USA) reviewed 259 patients with zygomatic fractures and found that ZMC (zygomaticomaxillary complex) fractures occurred in 78.8% of patients, arch fractures occurred in 10.8% and 10.4 % of patients, respectively. Of note, displaced or comminuted fractures were found in 59.3% of patients with isolated zygomatic arch fractures.Goal: The main purposes of this study are to determine cause of zygomatic fractures, the occasion and form of fractural lines.Specific objectives:1. To reveal the occurance of zygomatic fracture2. To identify etiology of zygomatic fracture3. To classify the configuration of zygomatic fractureMaterials and Methods: The study of the science discussion be provide necessity which faced on medical science. Therefore: In-patients with zygomatic fracture treated in State of central hospital. The data of this study composed 13314 in-patients records who treated 480 patients at maxillofacial department of State hospital between 1996-2011. Objectives representative expecting is 8-10%.Result: There were 3.61% 480 patients with zygomatic fractures of total patients 13314 treated in Maxilla facial-oral surgery clinic from 1996-2011. The zygomatic fractures have been occurred mostly in the everyday life injures and traffic accidents 61.25% have resulted from beginning fight. There were arch fractures 17,53%, zygomatic fractures 18.31%. There were the main fractures 64.16% in the zygomatic have occurred in the maxillary sinusitis.

Learning objectives: After reading this article, readers should be able to:1. Get information about brief historical aspects of the cleft palate treatment;2. Understand techniques used to repair various types of the cleft palate;3. Understand the optimal timing of the cleft palate repair;4. Understand the results and complications following palate repair including speech, maxillary growth, and fistula formation, regarding with operative techniques and timing of palatoplasty.Summary: Cleft palate is more common congenital anomaly, but surgeons have been eluding surgical correction of the cleft palate for centuries. Many surgical techniques have been described during last two centuries, the goals of these include separating the nasal and oral cavities (avoiding fistulas), establishing normal speech, and preserving maxillofacial growth. This article reviews the brief historical aspects of the cleft palate, palatoplasty techniques, the optimal timing, and the results and complication associated with palate repair technique and timing.

The timing and technique for palatoplasty is very controversial, recent literature advocates for early repair, between six and eighteen months of age, facilitating normal speech and language development, and avoiding hearing loss. It is using three main kinds of techniques for palatoplasty in the worldwide, two flap pushback, Furlow double opposing z-plasty, and two-step palatoplasty.Cases presenting later in life to the Mongolian National Center for Maternal and Child Healthprovide Mongolian surgeons′ with the challenge of wider defects which are difficult to manage successfully using traditional palatoplasty techniques.Oro-nasal fistula formation is an one of most documented postoperative complication, and it`s rate is reported between 6-42,3% in the literature. In Mongolia patients often present in older than recommended age for palatoplasty,it provide surgeons with the challenge of managing wider defects, which have higher rates of fistula formation and wound dehiscence. There were 30% of ONF in our practice. So, in 2000 we established new modified Mongolian technique for primary palatoplasty for improved outcomes across all age groups. And ONF rate reduced from 30% to 5.9 % in our department. Objective: To determine velopharyngeal function after primary palatoplasty by Mongolian method in connective with age at repair and cleft type.In our study were included over four year’s old patients, who underwent primary palatoplasty by Mongolian method at the authors` centre. We excluded syndromic cases, and patients who had an oronasal fistula postoperatively, and no cooperation with speech therapist. This study, we use video records of nasopharyngeoscopy to evaluate for cleft lip and palate patient’s velopharyngeal function associated with type of clefts, the timing of palate repair and cooperation with speech therapist.There were included totally 28 patients who are 4-23 years old (mean age 10.2 years) at the time of study, were performed primary cleft palate repair by Mongolian technique at NCMCH. The mean age at palate repair was 38 months (14 months-18 years). Overall, 39.2% (11) of patients were performed palate repair at 18≥ months old and 60.8% (17) patients were operated palate repair at 18< months. In the first group, VPI was demonstrated 27,3%, and in the second group 41,2%. Also, there were demonstrated VPI for 66,7% of Veau 1 type, 45,5% of Veau 3 type, and only 10% of Veau 4 type, after Mongolian method. Better velopharyngeal result for Veau 4 type and wide cleft palate after Mongolian method than other types. We should continue this study in wider screen for recognition this results.

Hemangiomas are common benign vascular tumors which about 70% to 80% of the lesions are found in the head and neck region. This study was conducted on 36 children with hemangioma who were referred to Orofacial Surgery Cabinet of Dental School of Health Sciences University of Mongolia and Orofacial Surgery Cabinet of National Center for Maternal and Child Health of Mongolia between 2013 and 2015.Of the 36 children referred for assessment, 72% were female, 55% were infants of 4 to 9 months old, and 83% of them were citizens. 58% of patients underwent cryotherapy,and 57% of patients underwent cryotherapy had 2 therapy sessions. 25% of patients receiver sclerotic therapy, and 67% of them had 2 therapy sessions. According to the locations of hemangiomas 30% of them were localized in infraorbital area. 72% of the participants are women and 55% are children age of 4-9 month which 83% of all participants were living in city. 58% of children with hemangioma are treated with cryotherapy which 57%of treatment finished by second visit. And 25% were treated by dehydration treatment which 67% were finished by second visit.